If my_list = [10, 20, 30, 40], what does the expression my_list[-2::-2] evaluate to?
- [20, 10]
- [30, 10]
- [40, 20]
- [40, 30]
The expression my_list[-2::-2] starts at the second-to-last element of the list (which is 30), and it then steps backward by 2 positions, so it selects every second element in reverse order. Therefore, the result is [20, 10].
Loading...
Related Quiz
- You have a dataset with a large number of features. How would you use Scikit-learn to select the most important features for model training?
- How does the method resolution order (MRO) in Python impact method overloading in the context of inheritance?
- Which of the following is a modulus operator in Python?
- You are developing a system where you have multiple classes, and you want to ensure that a particular set of methods is available in all these classes. How would you ensure this?
- In Python, to create a private attribute in a class, you prefix the attribute name with _______.